Channel occupancy time sharing for sidelink in unlicensed spectrum

An apparatus, comprising:

• at least one processor;
• and
• at least one memory comprising computer program code,
• the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to:
• upon acquiring a channel occupancy time, transmit a first indication to at least one responding user equipment, wherein the first indication comprises at least one of:
• a duration of the channel occupancy time, or configuration information for at least one second indication;
• and
• transmit the at least one second indication to the at least one responding user equipment prior to a sidelink transmission from the at least one responding user equipment, wherein the at least one second indication comprises at least one of:
• an indication of listen before talk type that the at least one responding user equipment should apply for the sidelink transmission taking place within the channel occupancy time duration, or an indication of a new channel occupancy time duration.

An apparatus, comprising:

• at least one processor;
• and
• at least one memory comprising computer program code,
• the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to:
• receive, from an initiating user equipment, a first indication, wherein the first indication comprises at least one of a duration of a channel occupancy time or configuration information for at least one second indication;
• receive the at least one second indication prior to a sidelink transmission by the apparatus, wherein the at least one second indication comprises at least one of an indication of listen before talk type that the apparatus should apply for the sidelink transmission taking place within the channel occupancy time duration or an indication of a new channel occupancy time duration;
• based on at least one of the first indication and the second indication, determine at least one of the channel occupancy time or the listen before talk type to apply for sidelink transmission;
• and
• perform the sidelink transmission based on the determination.